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<html>
<head>
  <meta charset="UTF-8">
  <title>iron-list test</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">

  <script src="../../webcomponentsjs/webcomponents-lite.js"></script>

  <script src="../../web-component-tester/browser.js"></script>
  <script src="../../test-fixture/test-fixture-mocha.js"></script>
  <script src="../../iron-test-helpers/mock-interactions.js"></script>

  <link rel="import" href="fixtures/helpers.html">
  <link rel="import" href="fixtures/x-list.html">

</head>
<body>

  <test-fixture id="trivialList">
    <template>
      <x-list></x-list>
    </template>
  </test-fixture>

  <script>
    'use strict';
    suite('Different heights', function() {
      var list, container;

      setup(function() {
        container = fixture('trivialList');
        list = container.list;
      });

      test('render without gaps 1', function(done) {
        list.items = [
          {index: 0, height: 791},
          {index: 1, height: 671}
        ];
        list.push('items',
          {index: 2, height: 251},
          {index: 3, height: 191},
          {index: 4, height: 151},
          {index: 5, height: 191},
          {index: 6, height: 51},
          {index: 7, height: 51},
          {index: 8, height: 51}
        );
        simulateScroll({
          list: list,
          contribution: 100,
          target: 100000,
          onScrollEnd: done,
          onScroll: function() {
            assert.isTrue(isFullOfItems(list));
          }
        });
      });

      test('render without gaps 2', function(done) {
        var height = 2, items = [];

        while (items.length < 15) {
          items.push({height: height});
          height *= 1.5;
        }
        list.items = items;

        simulateScroll({
          list: list,
          contribution: 100,
          target: 100000,
          onScrollEnd: done,
          onScroll: function() {
            assert.isTrue(isFullOfItems(list));
          }
        });
      });

      test('render without gaps 3', function(done) {
        var heights = [20, 100, 140, 117, 800, 50, 15, 80, 90, 255, 20, 15, 19, 250, 314];

        list.items = heights.map(function(height) {
          return { height: height };
        });

        simulateScroll({
          list: list,
          contribution: 100,
          target: 100000,
          onScrollEnd: done,
          onScroll: function() {
            assert.isTrue(isFullOfItems(list));
          }
        });
      });

    });

  </script>

</body>
</html>
